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Identification sign
A sign giving the business`s name only for purposes of identification. An identification
sign can also be one provided by an advertiser with his name and/or slogan,
as well as that of the business displaying the sign.
Illuminance
The luminous flux density at the surface being lit, usually measured with
a light meter. The unit is the lux, one lumen per square meter.
Illuminated sign
A sign that emits or reflects light from either an internal (electric) source
or external floodlights.
Illuminated sign case
A sign consisting of a cabinet containing a light source surrounded by one
or more translucent faces which may be illuminated for visibility.
Impulse Buying
An unplanned or shifted purchase.
Incandescent Bulb
A lamp that produces light through the application of electrical energy to
a wire filament, which glows as it is heated.
Interior Signs
Signs that are located inside a building or other facility.
Internally Illuminated Signs
A sign that is illuminated by a light source that is contained inside the
sign.
Incandescent
The common form of electric lamp; which unlike fluorescent or neon, generates
light from a heated filament in a vacuum.
Incandescent bulb
A lamp that produces light through the application of electrical energy to
a wire filament, which glows as it is heated. The average household light
bulb is an incandescent bulb. It remains a popular light source for many
signs.
Inert Gas
A gas that does not react with other substances. They include neon, argon,
helium, krypton and xenon. They are also referred to as noble or rare gases.
Initial lumens
The lumen output of a lamp, measured after an agreed ageing period - (1 hour
for incandescent and 100 hours for discharge lamps) under standard test
conditions.
Input end (low-voltage circuit)
Refers to the part of the device between the feeding point and the input terminals
of the transformer, converter or invertors.
Installer
The person, qualified in sign installation practice, who takes responsibility
for the quality of the installation and its testing.
Insulating sleeve
Insulation designed to be placed over the exposed high-voltage connections
at tube electrodes or over cable-end insulators. Some types of insulating
sleeves were previously called "bell glasses".
Intensity
The density or opaqueness of a color. Also, the amount of light put out by
a lamp.
Internally illuminated sign
An illuminated sign in which the light source is placed within the sign.
Invertors
An electric energy transducer that converts unidirectional current to alternating
current .It may also include means of transforming the supply voltage and
arrangements which help provide the starting voltage, prevent cold starting,
reduce stroboscopic effects, correct the power factor and/or suppress radio
interference.
IP ratings
The IP rating system provides a means of classifying the degrees of protection
from dust, water and impact.
ISA
International Sign Association.
Italic
Alphabet that consists of sloping characters. |
